Iddhi-pāda: ‘roads to power’ or success are the 4 following qualities,,for as guides, they indicate the road to power connected therewith; and because they form, by way of preparation, the roads to the power constituting the fruition of the path; Vis.M XII, namely:;concentration of intention chanda - samādhi accompanied by effort of will padhāna - sankhāra - samannāgata concentration of energy viriya - samādhi… concentration of consciousness citta - samādhi.. and concentration of investigation vimamsa - samādhi accompanied by effort of will.; As such, they are supra-mundane lokuttara i.e. connected with the path or the fruition of the path; see: ariya-puggala But they are mundane lokiya as predominant factors adhipati see: paccaya, for it is said:;Because the monk, through making intention a predominant factor, reaches concentration, it is called the concentration of intention chanda - samādhi etc.; Vis.M XII.

These 4 roads of power lead to the attaining and acquiring of magical power, to the power of magical transconstruction, to the generation of magical power, and to mastery and skill therein; Pts.M. II. 205, PTS. For a detailed explanation, see: Vis.M XII.

Once the Bhikkhu has thus developed and often practised the 4 roads to power, he enjoys various magical powers,… hears with the divine ear divine and human sounds,… perceives with his mind the mind of other beings… remembers many a former existence… perceives with the divine eye beings passing away and reappearing,… attains, after the ceasing of fermentations, deliverance of mind and deliverance through understanding, free from. fermentations. see: LI, 2. For a detailed explanation of these 6 higher powers, see: abhiññā

Whosoever, o Bhikkhus, has missed the 4 roads to power, he has missed the right path leading to the ceasing of suffering; but whosoever, o Bhikkhus, has reached the 4 roads to power, he has reached the right path leading to the ceasing of suffering; see: LI, 2.

See the chapter on Iddhipāda in The Requisites of Enlightenment by Ledi Sayadaw WHEEL 169/172.